Service station signpost



FIG. 1 is a perspective view of a service station signpost in accordance with the present design;

FIG. 2 is a front elevational view of the service station signpost of FIG. 1;

FIG. 3 is a left side elevational view of the service station signnpost of FIG. 1;

FIG. 4 is a right side elevational view of the service station signpost of FIG. 1;

FIG. 5 is a top plan view of the service station signpost of FIG. 1; and,

FIG. 6 is a bottom plan view of the service station signpost of FIG. 1. 

The ornamental design for a service station signpost, as shown. 